1. GOVERNMENT COLLEGE OF ENGINEERING
CHANDRAPUR
Presentation by
Mr . Mohan Mehar
Guided By
Prof. D.V. Rojatkar Sir

2. Leakage Compensation Of
TRANSCUTANEOUS TRANSFORMER

3. CONTENT
Introduction
Proposed transcuteneous energy transfer scheme
Analysis of the Proposed Scheme
 Determination of the Control Region
Design of the system
Control of the System
Advantages
 Challanges
Conclusion
Referances.

4. INTRODUCTION

5. Transcutaneous transformer

6. Proposed Scheme
 for high Gv at variable load and K
Turns Ratio should be uniy

7. Analysis of the Proposed Scheme

8. • Gv and compensated frequency (w0)
• Gv and coupling coefficient (k)

9. • Determination of Control Region
For k=0.1
For k=0.4
For convertor Wr=1
For V0 Gain is function of Wr

10. Design of the System
V0=24V I0min=0.5A Iomax=2.0A
Parameter Magnitude Specify
Ferroxcube Pot Core 6656
3C8 Ferrite
Size, Geometry, Core OD 2.6 in, thickness 1.1 in
Air gap: 10–20 mm
Misalignment: 0–10 mm.
Quality Factor Q 2 to 8 Should be low to be least sensitive to GV
Comp.R.W0 120KHz for small size and high efficiency
63.5µH each for T.R.=1 and
Ll1 and Ll2
k=0.265
C1 and C2 27 nF each for T.R.=1 and k=0.265

12. Advantages
 Increased Gv for variable load and K
 Reduced Ll and Im.
 High efficiency (90-98%) high power transmission (12-48W)
 No Biological effect and infection
 Minimum Configuration in thorax
 Reliable
 ZVSand ZCS
 Applicable for wireless transmission

13. Challanges
 High Cost
 Thermal imapct limits usable coil
geometry
 No. of Heartbeat

14. Conclusion
 According to NCHS, 7,00,000 cardiovascular victims per
yr.
 33,600 TAH implant/yr
 900 LVAS/yr
 270/1000 lives can be saved.
 Control Region for operating frequency determined.
 Design procedure for reduced Ll and Im established.
 No Biological effect and infection
 Applicable for wireless transmission

15. Referances
[1] A. Ghahary and B. H. Cho, “Design of a transcutaneous energy
transmission system using a series resonant converter,” in IEEE Power
Electronics Specialists Conf. Rec., 1990, pp. 1–8.
[2] J. C. Schuder and H. E. Stephenson, “Energy transport to a coil
which
circumscribes a ferrite core and is implanted within the body,” IEEE
Trans. Bio-Med. Eng., vol. BME-12, nos. 3 and 4, pp. 154–163, 1965.
[3] J. C. Schuder, J. H. Gold, and H. E. Stephenson, “Ultra high power
electromagnetic energy transport into the body,” IEEE Amer. Soc. Artif.
Int. Organs, vol. 17, pp. 406–410, 1971